====================================== | [ 575.637198][ T70] br2: port 1(vethhv-21) entered disabled state | [ 575.681957][ T70] ------------[ cut here ]------------ | [ 575.682877][ T70] WARNING: CPU: 1 PID: 70 at net/core/dev.c:11120 unregister_netdevice_many_notify (net/core/dev.c:11120 (discriminator 1)) | [ 575.683475][ T70] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel poly1305_generic libpoly1305 chacha_generic libchacha chacha20poly1305 tls [ 575.684701][ T70] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 575.685478][ T70] Workqueue: netns cleanup_net [ 575.685756][ T70] RIP: 0010:unregister_netdevice_many_notify (net/core/dev.c:11120 (discriminator 1)) [ 575.686231][ T70] Code: 05 64 56 61 02 01 90 ba 32 1b 00 00 48 c7 c6 a0 9a 93 85 48 c7 c7 00 9c 93 85 e8 bf 59 08 fe 90 0f 0b 90 90 e9 8a fb ff ff 90 <0f> 0b 90 e9 aa fb ff ff e8 c7 5c 27 fe e9 37 fc ff ff 90 0f 0b 0f All code ======== 0: 05 64 56 61 02 add $0x2615664,%eax 5: 01 90 ba 32 1b 00 add %edx,0x1b32ba(%rax) b: 00 48 c7 add %cl,-0x39(%rax) e: c6 (bad) f: a0 9a 93 85 48 c7 c7 movabs 0x9c00c7c74885939a,%al 16: 00 9c 18: 93 xchg %eax,%ebx 19: 85 e8 test %ebp,%eax 1b: bf 59 08 fe 90 mov $0x90fe0859,%edi 20: 0f 0b ud2 22: 90 nop 23: 90 nop 24: e9 8a fb ff ff jmp 0xfffffffffffffbb3 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: e9 aa fb ff ff jmp 0xfffffffffffffbdc 32: e8 c7 5c 27 fe call 0xfffffffffe275cfe 37: e9 37 fc ff ff jmp 0xfffffffffffffc73 3c: 90 nop 3d: 0f 0b ud2 3f: 0f .byte 0xf Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: e9 aa fb ff ff jmp 0xfffffffffffffbb2 8: e8 c7 5c 27 fe call 0xfffffffffe275cd4 d: e9 37 fc ff ff jmp 0xfffffffffffffc49 12: 90 nop 13: 0f 0b ud2 15: 0f .byte 0xf [ 575.687324][ T70] RSP: 0018:ffffc9000050fb28 EFLAGS: 00010293 [ 575.687656][ T70] RAX: ffff8880085b7458 RBX: ffff888007de0000 RCX: ffffffff828c7967 [ 575.688129][ T70] RDX: 1ffffffff0d6ff44 RSI: 0000000000000008 RDI: ffffffff86b7fa20 [ 575.688573][ T70] RBP: ffff888007de01c0 R08: 0000000000000000 R09: fffffbfff0d6ff44 [ 575.688989][ T70] R10: ffffffff86b7fa27 R11: ffffc9000050f621 R12: ffff8880085b7a80 [ 575.689462][ T70] R13: ffffc9000050fc00 R14: dffffc0000000000 R15: ffff8880085b7a80 [ 575.689913][ T70] FS: 0000000000000000(0000) GS:ffff88802e800000(0000) knlGS:0000000000000000 [ 575.690452][ T70] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 575.690807][ T70] CR2: 00007f5e167d9000 CR3: 0000000033534006 CR4: 0000000000770ef0 [ 575.691295][ T70] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 575.691722][ T70] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 575.692204][ T70] PKRU: 55555554 [ 575.692415][ T70] Call Trace: [ 575.692589][ T70] [ 575.692744][ T70] ? __warn (kernel/panic.c:677) [ 575.692960][ T70] ? unregister_netdevice_many_notify (net/core/dev.c:11120 (discriminator 1)) [ 575.693366][ T70] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 575.693612][ T70] ? handle_bug (arch/x86/kernel/traps.c:238) [ 575.693838][ T70] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 575.694109][ T70] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 575.694381][ T70] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) [ 575.694631][ T70] ? unregister_netdevice_many_notify (net/core/dev.c:11120 (discriminator 1)) [ 575.694965][ T70] ? unregister_netdevice_many_notify (net/core/dev.c:6962 net/core/dev.c:11120) [ 575.695320][ T70] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) [ 575.695669][ T70] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) [ 575.695917][ T70] ? nexthop_net_exit_batch_rtnl (net/ipv4/nexthop.c:569 net/ipv4/nexthop.c:1918 net/ipv4/nexthop.c:2426 net/ipv4/nexthop.c:3754) [ 575.696246][ T70] cleanup_net (net/core/net_namespace.c:633) [ 575.696479][ T70] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 575.696771][ T70] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 575.697033][ T70] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 575.697286][ T70] ? process_one_work (kernel/workqueue.c:2609) [ 575.697560][ T70] process_one_work (kernel/workqueue.c:2633) [ 575.697823][ T70] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 575.698089][ T70] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 575.698382][ T70] ? assign_work (kernel/workqueue.c:1101) [ 575.698626][ T70] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 575.698889][ T70] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 575.699269][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 575.699552][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 575.699824][ T70] kthread (kernel/kthread.c:388) [ 575.700066][ T70] ? __pfx_kthread (kernel/kthread.c:341) [ 575.700309][ T70] ret_from_fork (arch/x86/kernel/process.c:147) [ 575.700559][ T70] ? __pfx_kthread (kernel/kthread.c:341) [ 575.700812][ T70] ret_from_fork_asm (arch/x86/entry/entry_64.S:250) | [ 575.703603][ T70] ---[ end trace 0000000000000000 ]--- | [ 575.706658][ T70] ------------[ cut here ]------------ | [ 575.706982][ T70] WARNING: CPU: 3 PID: 70 at net/core/dev.c:11120 unregister_netdevice_many_notify (net/core/dev.c:11120 (discriminator 1)) | [ 575.707574][ T70] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel poly1305_generic libpoly1305 chacha_generic libchacha chacha20poly1305 tls [ 575.708842][ T70] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 575.709499][ T70] Workqueue: netns cleanup_net [ 575.709752][ T70] RIP: 0010:unregister_netdevice_many_notify (net/core/dev.c:11120 (discriminator 1)) [ 575.710126][ T70] Code: 05 64 56 61 02 01 90 ba 32 1b 00 00 48 c7 c6 a0 9a 93 85 48 c7 c7 00 9c 93 85 e8 bf 59 08 fe 90 0f 0b 90 90 e9 8a fb ff ff 90 <0f> 0b 90 e9 aa fb ff ff e8 c7 5c 27 fe e9 37 fc ff ff 90 0f 0b 0f All code ======== 0: 05 64 56 61 02 add $0x2615664,%eax 5: 01 90 ba 32 1b 00 add %edx,0x1b32ba(%rax) b: 00 48 c7 add %cl,-0x39(%rax) e: c6 (bad) f: a0 9a 93 85 48 c7 c7 movabs 0x9c00c7c74885939a,%al 16: 00 9c 18: 93 xchg %eax,%ebx 19: 85 e8 test %ebp,%eax 1b: bf 59 08 fe 90 mov $0x90fe0859,%edi 20: 0f 0b ud2 22: 90 nop 23: 90 nop 24: e9 8a fb ff ff jmp 0xfffffffffffffbb3 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: e9 aa fb ff ff jmp 0xfffffffffffffbdc 32: e8 c7 5c 27 fe call 0xfffffffffe275cfe 37: e9 37 fc ff ff jmp 0xfffffffffffffc73 3c: 90 nop 3d: 0f 0b ud2 3f: 0f .byte 0xf Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: e9 aa fb ff ff jmp 0xfffffffffffffbb2 8: e8 c7 5c 27 fe call 0xfffffffffe275cd4 d: e9 37 fc ff ff jmp 0xfffffffffffffc49 12: 90 nop 13: 0f 0b ud2 15: 0f .byte 0xf [ 575.711174][ T70] RSP: 0018:ffffc9000050fb28 EFLAGS: 00010293 [ 575.711516][ T70] RAX: ffff888009af7e58 RBX: ffff888008960000 RCX: ffffffff828c7967 [ 575.711940][ T70] RDX: 1ffffffff0d6ff44 RSI: 0000000000000008 RDI: ffffffff86b7fa20 [ 575.712366][ T70] RBP: ffff8880089601c0 R08: 0000000000000000 R09: fffffbfff0d6ff44 [ 575.712775][ T70] R10: ffffffff86b7fa27 R11: ffffc9000050f621 R12: ffff888007413300 [ 575.713191][ T70] R13: ffffc9000050fc00 R14: dffffc0000000000 R15: ffff888007413300 [ 575.713597][ T70] FS: 0000000000000000(0000) GS:ffff88802f000000(0000) knlGS:0000000000000000 [ 575.714064][ T70] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 575.714402][ T70] CR2: 00007fff4a526c58 CR3: 0000000009e7a006 CR4: 0000000000770ef0 [ 575.714806][ T70] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 575.715223][ T70] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 575.715629][ T70] PKRU: 55555554 [ 575.715817][ T70] Call Trace: [ 575.716002][ T70] [ 575.716173][ T70] ? __warn (kernel/panic.c:677) [ 575.716393][ T70] ? unregister_netdevice_many_notify (net/core/dev.c:11120 (discriminator 1)) [ 575.716734][ T70] ? report_bug (lib/bug.c:201 lib/bug.c:219) [ 575.716983][ T70] ? handle_bug (arch/x86/kernel/traps.c:238) [ 575.717244][ T70] ? exc_invalid_op (arch/x86/kernel/traps.c:259 (discriminator 1)) [ 575.717490][ T70] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 575.717800][ T70] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) [ 575.718079][ T70] ? unregister_netdevice_many_notify (net/core/dev.c:11120 (discriminator 1)) [ 575.718433][ T70] ? unregister_netdevice_many_notify (net/core/dev.c:6962 net/core/dev.c:11120) [ 575.718792][ T70] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11035) [ 575.719177][ T70] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2569 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3161 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) [ 575.719434][ T70] ? nexthop_net_exit_batch_rtnl (net/ipv4/nexthop.c:569 net/ipv4/nexthop.c:1918 net/ipv4/nexthop.c:2426 net/ipv4/nexthop.c:3754) [ 575.719758][ T70] cleanup_net (net/core/net_namespace.c:633) [ 575.719992][ T70] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 575.720293][ T70] ? __pfx_cleanup_net (net/core/net_namespace.c:581) [ 575.720555][ T70] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 575.720802][ T70] ? process_one_work (kernel/workqueue.c:2609) [ 575.721113][ T70] process_one_work (kernel/workqueue.c:2633) [ 575.721378][ T70] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 575.721618][ T70] ? __pfx_process_one_work (kernel/workqueue.c:2542) [ 575.721932][ T70] ? assign_work (kernel/workqueue.c:1101) [ 575.722207][ T70] worker_thread (kernel/workqueue.c:2700 kernel/workqueue.c:2787) [ 575.722455][ T70] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 575.722801][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 575.723103][ T70] ? __pfx_worker_thread (kernel/workqueue.c:2733) [ 575.723389][ T70] kthread (kernel/kthread.c:388) [ 575.723601][ T70] ? __pfx_kthread (kernel/kthread.c:341) [ 575.723862][ T70] ret_from_fork (arch/x86/kernel/process.c:147) [ 575.724103][ T70] ? __pfx_kthread (kernel/kthread.c:341) Finger prints: unregister_netdevice_many_notify:cleanup_net:process_one_work:worker_thread unregister_netdevice_many_notify:cleanup_net:process_one_work:worker_thread